Strap-cutting mechanism for strapping device

Abstract

A strap-cutting mechanism for a strapping device includes a strap-cutting head that has a through hole and clamping members. The through hole receives a knife sleeve extending therethrough. The clamping members are separated so that plates and a spacer arranged therebetween. The spacer is arranged between the plates so that a gap is formed between the plates for a packing strap to pass therethrough. The gap guides the packing strap so that a smooth strapping process can be ensured. An alternative spacer of a different thickness may be used to adjust the gap formed between the plates. This allows the plates and/or the spacer when become damaged or deformed after long use to be easily replaced, thereby extending the service life of the strapping device.

What is claimed is: 
     
       1. A strap-cutting mechanism for a strapping device that has a main body comprising a strap-cutting mechanism and a take-up component, wherein the strap-cutting mechanism comprises:
 a strap-cutting head, having a through hole and a pair of clamping members, the strap-cutting head being attached to the main body, the through hole receiving a knife sleeve extending therethrough, the knife sleeve having an extension that juts out of the strap-cutting head, the extension being formed with a pair of strap-holding slits, the clamping members being separated so that a pair of plates and a spacer are arranged therebetween, the plates each having an extension that juts out of the strap-cutting head, and the spacer being arranged between the plates so that a gap that is communicated with the strap-holding slits is formed between the extensions of the plates. 
 
     
     
       2. The strap-cutting mechanism of  claim 1 , wherein the knife sleeve is formed with a positioning recess, while the plates and the spacer each have a positioning salient, so that the positioning salient of the plates and the positioning salient of the spacer are positioned in the positioning recess. 
     
     
       3. The strap-cutting mechanism of  claim 1 , wherein the knife sleeve receives a knife shaft, and a handle is fixedly connected to one end of the knife shaft, so that when the handle is operated, the handle drives the knife shaft to rotate. 
     
     
       4. The strap-cutting mechanism of  claim 1 , wherein the plates are blades. 
     
     
       5. The strap-cutting mechanism of  claim 1 , wherein the clamping members have respective inner sides thereof that face each other jointly defining a mouth therebetween, and the mouth and the through hole are communicated with each other.